programs/taskmgr/priority.c

   1 /*
   2  *  ReactOS Task Manager
   3  *
   4  *  priority.c
   5  *
   6  *  Copyright (C) 1999 - 2001  Brian Palmer  <brianp@reactos.org>
   7  *  Copyright (C) 2008  Vladimir Pankratov
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 #define WIN32_LEAN_AND_MEAN    /* Exclude rarely-used stuff from Windows headers */
  25 #include <windows.h>
  26 #include <commctrl.h>
  27 #include <stdlib.h>
  28 #include <memory.h>
  29 #include <stdio.h>
  30 #include <winnt.h>
  31
  32 #include "wine/unicode.h"
  33 #include "taskmgr.h"
  34 #include "perfdata.h"
  35
  36 static void DoSetPriority(DWORD priority)
  37 {
  38     LVITEMW          lvitem;
  39     ULONG            Index, Count;
  40     DWORD            dwProcessId;
  41     HANDLE           hProcess;
  42     WCHAR            wstrErrorText[256];
  43
  44     WCHAR    wszWarnMsg[255];
  45     WCHAR    wszWarnTitle[255];
  46     WCHAR    wszUnable2Change[255];
  47
  48     LoadStringW(hInst, IDS_PRIORITY_CHANGE_MESSAGE, wszWarnMsg, sizeof(wszWarnMsg)/sizeof(WCHAR));
  49     LoadStringW(hInst, IDS_WARNING_TITLE, wszWarnTitle, sizeof(wszWarnTitle)/sizeof(WCHAR));
  50     LoadStringW(hInst, IDS_PRIORITY_UNABLE2CHANGE, wszUnable2Change, sizeof(wszUnable2Change)/sizeof(WCHAR));
  51
  52     Count = SendMessageW(hProcessPageListCtrl, LVM_GETITEMCOUNT, 0, 0);
  53     for (Index=0; Index<Count; Index++)
  54     {
  55         lvitem.mask = LVIF_STATE;
  56         lvitem.stateMask = LVIS_SELECTED;
  57         lvitem.iItem = Index;
  58         lvitem.iSubItem = 0;
  59
  60         SendMessageW(hProcessPageListCtrl, LVM_GETITEMW, 0, (LPARAM)&lvitem);
  61
  62         if (lvitem.state & LVIS_SELECTED)
  63             break;
  64     }
  65
  66     Count = SendMessageW(hProcessPageListCtrl, LVM_GETSELECTEDCOUNT, 0, 0);
  67     dwProcessId = PerfDataGetProcessId(Index);
  68     if ((Count != 1) || (dwProcessId == 0))
  69         return;
  70
  71     if (MessageBoxW(hMainWnd, wszWarnMsg, wszWarnTitle, MB_YESNO|MB_ICONWARNING) != IDYES)
  72         return;
  73
  74     hProcess = OpenProcess(PROCESS_SET_INFORMATION, FALSE, dwProcessId);
  75
  76     if (!hProcess)
  77     {
  78         GetLastErrorText(wstrErrorText, sizeof(wstrErrorText)/sizeof(WCHAR));
  79         MessageBoxW(hMainWnd, wstrErrorText, wszUnable2Change, MB_OK|MB_ICONSTOP);
  80         return;
  81     }
  82
  83     if (!SetPriorityClass(hProcess, priority))
  84     {
  85         GetLastErrorText(wstrErrorText, sizeof(wstrErrorText)/sizeof(WCHAR));
  86         MessageBoxW(hMainWnd, wstrErrorText, wszUnable2Change, MB_OK|MB_ICONSTOP);
  87     }
  88
  89     CloseHandle(hProcess);
  90 }
  91
  92 void ProcessPage_OnSetPriorityRealTime(void)
  93 {
  94     DoSetPriority(REALTIME_PRIORITY_CLASS);
  95 }
  96
  97 void ProcessPage_OnSetPriorityHigh(void)
  98 {
  99     DoSetPriority(HIGH_PRIORITY_CLASS);
 100 }
 101
 102 void ProcessPage_OnSetPriorityAboveNormal(void)
 103 {
 104     DoSetPriority(ABOVE_NORMAL_PRIORITY_CLASS);
 105 }
 106
 107 void ProcessPage_OnSetPriorityNormal(void)
 108 {
 109     DoSetPriority(NORMAL_PRIORITY_CLASS);
 110 }
 111
 112 void ProcessPage_OnSetPriorityBelowNormal(void)
 113 {
 114     DoSetPriority(BELOW_NORMAL_PRIORITY_CLASS);
 115 }
 116
 117 void ProcessPage_OnSetPriorityLow(void)
 118 {
 119     DoSetPriority(IDLE_PRIORITY_CLASS);
 120 }